don steward
mathematics teaching 10 ~ 16

Monday 25 January 2016

difference between combined functions

establishing a general rule for the second resource can be difficult, due to the four variables involved
and looking for reasons using general algebra may not help too much...

perhaps hint that "you might like to look at the multiplier (of x) minus 1" and then, having found a rule, see how it works algebraically

easily marked

also easily marked
some non-linear functions

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